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Some users may report a Transaction Error when trying to install updates on RedHat Enterprise Linux, Fedora, or CentOS. This error appears as a pop up box a couple of seconds after the update procedure times out.

2. Clear Transaction Error

To resolve this issue, change to super user (su). then run the following commands.

yum clean all
yum upgrade

This should clear the transaction error and allow updates to install without issues. This fix may work on other Linux distributions using the yum package manager aside from the ones listed.